# Query was NOT accelerated - Reflections Not Used

**URL:** <https://community.dremio.com/t/query-was-not-accelerated-reflections-not-used/10256>\
**Category:** Uncategorized\
**Created:** [February 1, 2023, 5:05pm UTC](https://community.dremio.com/t/query-was-not-accelerated-reflections-not-used/10256 "2023-02-01T17:05:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Piero](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/piero/32/4736_2.png) [@Piero](https://community.dremio.com/u/Piero)\
**Post date:** [February 1, 2023, 5:05pm UTC](https://community.dremio.com/t/query-was-not-accelerated-reflections-not-used/10256/1 "2023-02-01T17:05:24Z")

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Hello,

We are trying to run Dremio operations with a S3 dist storage and parquet files but whatever Reflections we enable, we always get the return “`Reflections Not Used`”. We can see the accelator files within the storage.  
Even with Raw reflection, we get a “`Raw Reflection (raw): considered, not matched`.” message.

We are using Community Edition (23.1.0-202211250136090978-a79618c7).

We see the following WARNING in the logs:  
`2023-02-01 14:41:56,013 [e0 - 1c2585cb-867c-0fad-1173-a2169f3ced00:frag:0:0] WARN com.dremio.plugins.NessieClientImpl - Content from Nessie for key dremio.reflections./s3-dremio-dist-v3-37f08045-6a61-46ad-9f8a-9827c2305ca3/accelerator/1803fc26-bc7a-4158-931e-0861c9c3bc68/5063a3b4-1f4b-42bb-900c-63243b09ac03_0 return null`

And those substitutions errors:

 ![image](https://us1.discourse-cdn.com/flex020/uploads/dremio/original/2X/d/d7e90b00d9d867dce853317315239cdb7fba9270.png)

Please find attached a profile sample with the issue.  
[a12ad1f6-ea06-40d0-a5b6-4e4aa977d98d.zip](https://community.dremio.com/uploads/short-url/792TVT99RkEWSty1XL2ZD40pHO6.zip) (33,0 Ko)

Are we missing something with the Dremio configuration?

Thank you for your help,  
Pierre

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**Author:** ![balaji.ramaswamy](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/balaji.ramaswamy/32/843_2.png) [@balaji.ramaswamy](https://community.dremio.com/u/balaji.ramaswamy)\
**Post date:** [February 1, 2023, 7:22pm UTC](https://community.dremio.com/t/query-was-not-accelerated-reflections-not-used/10256/2 "2023-02-01T19:22:22Z")

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@Piero

Looks like you are hitting a known issue (affects only the Community edition) fixed in 23.1.2 or 24.0 (to be released very soon)

Thanks  
Bali

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<div class="post-metadata">

**Author:** ![Piero](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/piero/32/4736_2.png) [@Piero](https://community.dremio.com/u/Piero)\
**Post date:** [February 2, 2023, 7:56am UTC](https://community.dremio.com/t/query-was-not-accelerated-reflections-not-used/10256/3 "2023-02-02T07:56:41Z")

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Thank you @balaji.ramaswamy for your feedback.  
Pierre